WRONG VENUE?

Is that the sound of NICOLE Brown Simpson spinning in her grave?

The family of O.J. Simpson's murdered ex-wife is tossing a Sept.16 fund-raiser for its Nicole Brown Foundation, which helps fight violence against women, at the Playboy Mansion.

But some of Nicole's pals believe Hugh Hefner's pleasure palace is a creepy choice for the $475-a-plate gala, since Simpson used to party there in the years before he was acquitted, in the grisly stabbing deaths of Nicole and Ron Goldman.

The foundation, which will have scantily clad playmates on hand to mingle with guests, had no comment. OJ however, is STILL hot on the trail of the KILLERS...